/Engine/Source/Runtime/Engine/Classes/Engine/LevelStreaming.h
FStreamLevelAction ( bool bIsLoading, const [FName](API\Runtime\Core\UObject\FName) & InLevelName, bool bIsMakeVisibleAfterLoad, bool bShouldBlock, const [FLatentActionInfo](API\Runtime\Engine\Engine\FLatentActionInfo) & InLatentInfo, [UWorld](API\Runtime\Engine\Engine\UWorld) * World )